The user wants me to choose one of the two words to fill in the blanks in the sentences.

Решение:

1. I like my new kite: it is very good.
2. Cows and horses are big and strong.
3. My new book is thick.
4. Sparrows are strong.
5. We can see new flowers in the park.
6. We can see an old tower by the lake.

Ответ: new; strong; new; thick; strong; new; an old.